Fuel-feeding mechanism for gas-producers.



PA'IBNTED MAY 5. 1908. 1); BAKER.

FUEL FEEDING MECHANISM FOR GAS PRODUCERS.

APPLICATION FILED NOV. 20, 1907.

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PATENTED MAY 5, 1908.

D. BAKER.

SM FOR GAS PRODUCERS. APPLICATION FILED NOV. 20, 1907.

.FUEL FEEDING MEGHANI 4 SHEETS-SHEET Z.

:No". 886,672. PATENTED MAY 5, 1908.

. 1).v BAKER, FUEL FEEDING MECHANISM FOR GAS PRODUCERS.

APPLICATION FILED-H0120, 1907. I

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O. J I 259mm DAV-ID BAKER, F-

PHILADELPHIA', PENNSYLVANIA.

FUEL-FEEDING MECHANISM FOR GAS-PRODUCERS. I

' Specification of Letters Patent.

.Patented May 5, 1908.

Application filed November 20, 1907. Serial No. 463,053.

Be it known that I, DAVID BAKER, of Philadelphia, county of Philadelphia, and State of Pennsylvania, have invented a new and useful Improvement in Fuel-Feeding Mechan- To-all whom it may concern:

'is m for Gas-Producers, of which the followa specification.

inglls invention has reference to mechanisr'nfor effecting a uniform feed to and an crating to feed the fuel to r c e evendistribution of the fuel in the combustion chambers of gas roducers, to the end that the level of the el' bed may be preserved and an effective combustion 'of the fuel obtained.

The invention consists inmechanism opthe combustion chamber in a path progressing circularly around the center of the chamber, and simultaneously operating to subject the fuel, as it is 'thus carried around the chamber, to a radial distributing action; whereby the fuel be spread evenly and uniformly, and the level of thefuel bed at all times preserved. ,F'In'the referred embodiment of my invenel enters'the combustion chamber through a spout or chute which is revolved about a vertical axis so as to direct the fuel the chamber in a circular path, and the -',d ischarge end of the chute is provided with an obliquely arranged deflecting or distribfuting plate which is rotated around a vertical {axis as the spout traverses its circular path,

with the result'that the fuel will, as it leaves the discharge end of the chute, be spread out and, distributed radially from an advancing ,center coincident with the path of travelof the spout. In this way every portion of the surface of the fuel bed will be'reached, and an even and uniform distribution of the fueleffected. It will be understood, however, that the mechanism for effecting the distribution of the fuel in this manner may be variously modified within the knowled e of the skilled mechanic without departing from the limits of my invention, provided the mode of operation is substantially as pointed out above. V

.In.the accompanying drawings :Figure 1 e is aside elevation, partly in section, of the upper'end of a gas producer having my invention applied thereto. Fig. 2'is a horizontal sectionalplan view on the line 0-0. of Fig.1? is a similar view' on the line Fig. 1. Fig. 4 is a vertical sectional elevation of a modification of my invention.

Fig. 5 is a cross sectional plan view on the line cc of Fig. 4. Fig. 6 is a view in the nature of a diagram, showing the manner in which the fuel is distributed by my improved apparatus.

Referring to the drawings:1 represents the upper end of a gas producercontaining the usual combustion chamber 3, and 3 represents a cover plate or rim applied to the top of the producer and having rising from its center an annular vertical throat the upper edge of which is flanged so as toform a bearing surface, on which is seated and supported a horizontal rotatable cap plate 5. The cap plate has its peripheral edge projecting beyond the throat 4, anrLhas formed on its under side, bevel gear teeth 6, engaged by a horizontal bevel driving pinion 7, mounted in bearings 8 on the fixed cover plate 3 and driven in a manner to be more fully described hereinafter, whereby a rotary motion of the cap plate around a vertical central axis is effected.

At'a point to' oneside of its center, the rotating cap plate is formed with a circular opening 9, surrounded by u throat 10, forming the lower discharge end of. a vertical cylindrical chute .1], extending obliquely upward toward the center and having its upper receiving end terminating vertically beneath the'lower discharge end of a fixed flue reservoir 12, sustained by the super structure of the furnace, a water seal joint being formed between the discharge end of the fuel reservoir and the upper end of the s )out, by forming the latter with an annular channel 13, into which is extended a vertical flange 14 de )ending from the lower end of the reservoir, the annular s nice between these parts being filled as usual with water or other sealing li uid.

Beneat l the discharge end of the reservoir is sustained a fixed horizontal plate 15, on which the fuel falls as it leaves the reservoir, and from which plate it is pushed by a vertical scraper blade 16, extending transversely across the plate and reciprocated thereon, with the result that the fuel will be pushed alternately over the opposite edges of the plate, and will thus enter the upper end of the rotary spout in intermittent streams. The scraper blade is carried by a horizontal rod 17- sl idingly guided through openings in a casing 17 surrounding the blade and plate, which rod is connected to the lower end of a.

6O [which is closedat this point to prevent the pendent lever 18, vibrated in amannerto. c more fully described hereinafter.

In the discharge end of the rotating 'spout' is arranged an obliquely extending deflector or distributing plate 20, fixed to the lower end of avcrtic al shaft 21, extending upwardly and mounted to revolve in bearings 22' and 23 fixed to the spout, the upper end .of the. shaft havingfixed to it a pinion 24, meshing with a fixed circular rack 25, formed on the exterior of the chamber The deflector plate is so disposed Within the end of the s out that it will receive on its surface and ischarge in a lateral direction, the fuel flowing-through the spout, and as the plate is revolved by-its shaft, as the latter is carried around and its pinion caused to travel over tion' chamber.

the rack 25, the direction of flow of the fuel is constantly-changing, being subjected toa radial distribution from an advancing center as the lower end of the spout pursues its circular path around the center of the combus- It will be observed, there fore, that by reason of the rotation of the cap plate,.the discharge end of the; spout is carried' around a circular path, and the fuel -flowi ng therefrom is distributed in a corresponding maimerin the combustion chamher; and it is further seen that by reason of the rotation of the deflector plate, as the spout is thus. carried around, the fuel will,

as it leaves the spout, be subjected to a radial distribution, and in this manner will be directed toward the center of the combustion chamber and toward its e'riphery and at intermediate points, so t at it is spread evenly and uniformly over the entire ,surface of the fuel bed. I

The bevel pinion 7 for imparting a rotary motion to the cap plate may be driven in any appropriate manner, but I prefer to operate t e same by means of a rocking lever 30,

" mounted at its lower end on an axis coincident with that of the bevel wheel and provided with a driving teethof a ratchet whe 32 rotatable with the bevel gear. The lever is given a vibratory motion by means of a rocker arm 33, connected at one end to the, lever and having its.

opposite end connected to an eccentric disk- 34 on a driving shaft 35. I prefer to reciprocate the scraper 16 by connections fromthe' same driving shaft said connections consisting of a rocker arm 36, jointed at one'end to the pendent lever 18, before alluded to, 'and p having its opposite end connectedwith'the eccentric disk 34 r l The upper end ofthe fixed fuel reservoir is provided with a feed hopper 50, by which the fuel may be introduced into the reservoir,

escape of gas, by means of a weighted valve 51,, or by other suitable means.

revolutions for every revolution of the eccention, that is, pointing toward the coal is relatively greatest.

pawl 31, engaging the. e

, The scraper bladeibeing operated the eccentric, will make 1 two reciprocations or sealers movements across the plate, for every revolution of the eccentric, so that there will be two'periods of maximum feed of the fuel into the. upper end of the rotary spout, for every complete revolution of the eccentric. In order that, under theseconditions, the periods of maximum feed will occur when the distributing plate 20 ispointing or inclined toward the periphery of the combustion chamher, -to' the end that the greatest amount of fuelwillbe. distributed there, and the smaller amounttoward the center where the area is less, as shown in Fig. 6, I so arrange the parts that the distributing plate will make two 8 tric, which operates. the scraper blade, withthe relation'of the parts such that at the maximum periods in the feed of the material by the scraper blade, the distributing platewill be inclined outward toward the periph- 8 cry of the combustion chamber, as shown in Fig. 1. The result of this will be'to make the least flow of fuel toward the center of the producer, Where the area is relatively smaller, and the feed. will gradually increase and reach its maximum amount when-the .distributing plate isin the opposite radialposiwalls of the produeer,-where the area to be coveredby the 9 In the modified form of the mechanism,

shown in Figs} and 5, the scraper blade 16 is-guided in its movement inthe rotary spout 1 1, the outer end of the rod 17 being linked to ahorizontal lever 60, pivotedbetween its 1 ends 'on'the outer end of a supporting arm or bracket 61 ,and sustained by the rotary spout "111 Theopposite. end of lever is'jointed toon'e end of a link 62, .whose opposite end is connected with a crank arm 63 on the lower 1 V bracket 65, sustainedby .the rotary spout 11 The upper end of shaft 64 carries a pinion 66, driven by pinion 24' on the shaft 21, which drives the distributing plate, the said pinion 24" receiving ts motion from the fixed circular rack '25, with which it meshes as it is carried therearo'und' by the-rotation of the spent, as

described in connection with Fig. 1. As a 1.15

result of th e construction described, it will be v observed that asthe spout is carried around,

carrying the distributing plate, and to the pinion 24 m said shaft, which pinion, -rIiesh-' 120 sir'able that during the eriods of maximum feed of the material .by t e scraper blade, the

distributing plate will be inclined so as to direct the fuel toward the pe iphery of the 130 05 end of a vertical shaft 64, mounted in a bearing on the end of :an arm or 'it will impart a rotary motion to shaft 21 chamber, and in order to accomplish this, the

four-tenths of the fixed rac so that the distributing plate will make six and fourtenths revolutions for one complete "revolution of the spout. This causes the distributing plate to discharge in a different circle from the preceding revolution of the spout.

In order that the amount of fuel fed by the 'scraper blade may be varied, or in other words, in order that the throw of said blade may be changed so as to decrease or increase its movements, I connect the 'end of link 62 with the end of lever 60 adjustably, which is effected by forming in the end of lever (it) a number of holes 60' in either of which a pivot pin, carried by link 62, may be passed so as to connect this link 62 at different points onlever 60.

As shown in Fig. 6, the effect of introducingthe fuel into the combustion chamber in a circular path from which it is spread out radially, is to distribute the same in a series of overlapping rings arranged circularly around the center of the combustion chamber, which rings by reason of the manner in which the feeding mechanism is opcratul, contain more material in their oute portions, which lie next the periphery of the chamber, than in their inner portions, which lie next the center of the chamber.

Having thus described my invention, what I claim is 1. In combination with a gas producer rovided with the usual combustion chamlier, means for feeding the fuel to said chamber in a path progressing around a vertical axis, and means at the outlet of said feeding means for spreading the fuel in a series of rings from said path as the feeding actionv progresses.

,2. In combination with a gas producer, provided with the usual combustion-chamer, means for feeding the fuel into said combustion chamber in a circular path, and means for distributing the fuel radially from a cfinter advancing coincident-1y with said at p 3. In combination with a gas roducer and its combustion chamber, a fue reservoir, a rotary spout conducting the fuel from the reservoir to the combustion chamber, and a rotary deflector plate in said. spout, rotatable around a vertical axis; whereby the plate will serve to distribute the fuel radiallyjroni a center coincident with the ment of the rotary spout;

4. In conibina'tion with a gas r itscombustion 'chamber,a fjue res I rotary s out, communicating with said reser voir am having its'discharge end arranged to path ofgm'overvoir, a

deliver into said combustion chamberfand" an inclined deflector plate in thedischa rge end of the spout rota-table around a yer-tical axis.

5. In combination with a gas producer having a combustion chamber, a fuel reservoii'. a spout having its upper end in position to receive the fuel from the reservoir, and its lower end discharging into the producer to one side of its center, means for rotating the spout around a vertical axis, and an inclined .dellector plate rotatable in the'iower end of a 6. In combination with a gas producer and the spout around a vertical axis.

its combustion chamber, a fuel reservoir, a rotatable" cap plate covering the combustion chamber and provitLed at one side of its center with an opening,.a spout having its lower end connected with said opening and its upper end in position to receive the fuel from the reservoir, means for rotating the cap plate whereby the lower discharge end of the spout will be carried around in a circular path, an inclined deflector plate arranged in the discharge end of the spout, and means for rotating said deflector plate around a vertical axis.

7. In combination with a, gas producer and its combustion chamber, a fuel reservoir, a fixed circular rack, a spout having its upper end in position to receive the fuel from the reservoir and having its lower end discharging into the combustion chamber to one side of its center, means for rotating said spout about avertical axis; whereby its .lower aischarge end will be carried around in a circular path, a fuel distributing device in the discharge end of the spout, a vertical shaft to which said device is fixed, said shaft being extended upward through the spout to its outside, and. a pinion on saidshaft meshing with the fixed rack; whereby a rotary motion .will be imparted to the shaft as the latter is carried around with-the revolving spout, thereby imparting to thefuel-distribut1ng device a rotarymotion around avertical axis.

8. In combination with a. gas roducer and its combustion chamber, means or distribut-q ing the fuel therein in a series of rings disposed circularly around the center of the chamber, and means for -so controlling the flow of the material that the rings will con-. tain the greatest amount of fuel in theirouter sides, substantially as described.

. 9. In combination with a gas roducer and its combustion chamber, a fue reservoir, a rotary spout receiving the fuel from said res ervoir and directing it into the combustion tii r t'r llhl.

chamb nieans for effecting the flow of the materi al' into thespout intermittently,

whereby itzwill have a maximum and a minimum period of feed, means for (llI'QCUDg the fuel-as it leaves the spout alternately outward and inward, respectively, toward the periphery andjeenter of the combustion chamber,

'andimeans whereby the fuel will be directed outward towardtheperiphery of the combustion chamber coincident with its period of maximum feed into the spout.

10. In combination wlth a gas producer and its-combustion chamber, a fuel reservoir,

'reservoir'and discharging the sameinto the combu tion chamber, a fixed plate on which the material is received from the reservoir, a siaper blade reciprocating across said plate a rotary spout receiving the fuel from said and acting to feed the fuel into the upper end of the spout in intermittentstreams, an inn1oment when the scraper blade'efl'ects the maximum feed of the flow of the fuel intothe up er end of the spout. n testimony whereof I hereunto set my hand this 11th. day of November, 1907,in the presence of two attesting witnesses.

. Witnesses:

LOUISE B. MORRIS, L., M. HUDNUT.

DAVID BAKER. I 

